Dewatering Systems

Dewatering systems are methods used to remove water from solid material or soil, typically in an excavation or location where water covers the planned working surface, or during mining or other engineering projects. These systems are employed to reduce the water content in the soil and to lower the groundwater table in order to obtain a dry area in the vicinity of an excavation which would otherwise extend below water.

United Dewatering specializes in mainly 4 types of dewatering systems:

Sump pump systems: In simple terms, sump pump systems are commonly used to drain excess water from where it is not needed, be it in basements, excavations, pipelines, lakes, sewage systems, or others. These systems are effective for managing groundwater infiltration, preventing water damage to foundations, and avoiding overflows.

Well-point systems: Well-point systems are widely used in construction projects, particularly for excavations and foundation works. They consist of shallow wells equipped with small diameter pipes (well-points) installed around the perimeter of an excavation site. Vacuum pumps are used to lower the water table around the excavation area, allowing for dry working conditions and preventing cave-ins or collapses. We offer systems suitable for use in ground conditions from silty sands to coarse gravels, on sites of all sizes and types.

Deep-well systems: Deep-well dewatering systems are employed in deep excavations, tunnels, and mining pits where groundwater levels are deeper. These systems involve the installation of deep wells equipped with submersible pumps that can draw water from significant depths. Our expertise and experience have allowed us to dewater both low permeability and
high permeability soils at depths of more than 50 meters.

Ejector well systems: Ejector well systems are used in situations where the water table is too high for conventional dewatering methods to be effective. They require a special technique suited to bore water pressure control and stabilization of low permeability soils such as fissured clays, silts and silty sands. This technique involves the installation of ejector wells, which use high-pressure water jets to create a vacuum that draws water and sediments into the well. We have extensive experience in the design, installation, and maintenance of such systems.

Dewatering Systems

United Dewatering

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